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Solar Control DS18B20


i'm new in this forum. I try to explain my problem. 

I have two termal sond DS18B20, that i use for Arduino. I want to ask if there is a product of Sonoff for install. the problem is that when there is a seven degrees difference between the ds18b20, the relè turn on. otherwise the relè is off. 

Have Sonoff one device for this problem??! 

thanks so much..


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